A/c repair call. Found the system not cooling because the fuse was popped due to the main electrical switch being bad. Ohm reading across switch only read 1 ohm. Found a weak blower capacitor as well (5 uf). Found rusty, corroded evaporator coil likely to leak. The system is 11 years old and runs on r22, a refrigerant that has been phased out by the EPA. The system has no surge protection. The system has no overflow protection switch to serve as a backup to the primary water safety switch and to help protect the furnace from potential water damage. Due to the age and condition of the system, recommend upgrading the system to a more reliable and more efficient system. The customer just wants repair for now. Replaced blower capacitor and main electrical switch. The system is cooling at this time. The customer used $35 off coupon.